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intersect 4D (3D + time) trajectories with 3D volumes #21

Closed espinielli closed 5 years ago

espinielli commented 6 years ago

I am entering this issue here following https://github.com/Robinlovelace/geocompr/issues/12#issuecomment-388207258 reply to my request.

The simple use case I have is about intersecting 4D (3D [lon, lat, altitude] + time) trajectories with 3D volumes, think aircraft (or drone or Uber flying cars :wink: ) flights and Air Traffic Control sectors (typically a base polygon extruded from altitude1 [possibly above ground] to altitude2).

The more complicated one is where the 3D volumes do change shape in time (for example ATC sectors are collapsed during the couse of the day/night when traffic density is lower).

The further more complicated case is one where you want to intersect 3D volumes moving and changing shape and intersect with other 3D volumes. Think volcanic ash cloud and ATC sectors.

I am aware of very specialized (and not in R) code for this, but would be very interested to see whether there are other domains with similar cases to further provide support in R spatial.

tim-salabim commented 5 years ago

Can this be closed? Given the lack of activity?

espinielli commented 5 years ago

Yes, unfortunately no much feedback / interest...sigh.